Article · 10 min
Why choose a light-coloured sapphire for an engagement ring?
Why a light-coloured sapphire needs a closer look Why does colour matter so much when you choose a pale sapphire? Colour has the greatest…
Subject
Gemstones
Coloured gemstones are described differently from diamonds, and understanding a few ideas makes every choice clearer: how gems are evaluated, what treatments are common and how they should be disclosed, and which stones are durable enough for everyday wear. Start with how coloured gemstones are evaluated and the language of hue, tone and saturation; then treatments and disclosure, so you know what to ask; then durability and suitability, so a beautiful stone also lasts. At the centre is the Gemstone Encyclopedia — an A–Z of individual gemstones with their properties, treatments and care. Every claim here is written for gemmological review, and nothing assumes you will buy from Ralph Jacobs.
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Why are some diamonds treated? Diamond treatments explained
Why diamond treatments matter before you buy Why should you care whether a diamond has been treated? A treatment can change how a diamond…
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Why do two rubies look so different? How to buy a ruby
Why colour matters most when you buy a ruby Why start with colour when you compare rubies? Because colour is the most significant factor…
Article · 11 min
Why moissanite durability matters in an everyday ring
Why moissanite durability matters for a ring you wear every day Why ask about durability before anything else? If you plan to wear a…
Article · 9 min
Why a protective setting for soft gemstones matters in a ring
Why does a protective setting for soft gemstones matter so much? If you love a gemstone that’s softer than diamond, you may worry it…